package com.zzp.thread2;

import java.util.concurrent.locks.ReentrantLock;

public class TestLock {

    public static void main(String[] args) {
        TestLock2 testLock2 = new TestLock2();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
    }
}

class TestLock2 implements Runnable {

    int ticketNumber = 10;
    //定义lock锁
    private final ReentrantLock lock = new ReentrantLock();

    @Override
    public void run() {
        while (true){

            try {
                //加锁
                lock.lock();
                if (ticketNumber > 0){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }

                    System.out.println(ticketNumber --);
                }else break;
            }finally {
                lock.unlock();
            }

        }
    }
}
